초록 ▼

A low friction fluid motor has a diaphragm mounted in a shell to divide the shell into first and second chambers, a port means for connecting the second chamber to a pressure or vacuum source, and an actuator assembly. The actuator assembly is connected to the diaphragm and includes an actuator memb

A low friction fluid motor has a diaphragm mounted in a shell to divide the shell into first and second chambers, a port means for connecting the second chamber to a pressure or vacuum source, and an actuator assembly. The actuator assembly is connected to the diaphragm and includes an actuator member extending out of the shell through an aperture. The actuator is free of any seal member which is interposed between the actuator member and the shell and which functions to form a seal between the actuator member and the aperture in the shell. The aperture is oversized relative to the actuator member to allow free passage of the actuator member from the actuator assembly through the first chamber and out of the fluid motor.

대표청구항 ▼

[ What is claimed is:] [12.] A fluid damper comprising: A low friction fluid motor including:a shell;a diaphragm separating the shell into a first chamber and a second chamber;a port in the shell for connecting a source of pressure or vacuum to the second chamber;an actuating member connected to the

[ What is claimed is:] [12.] A fluid damper comprising: A low friction fluid motor including:a shell;a diaphragm separating the shell into a first chamber and a second chamber;a port in the shell for connecting a source of pressure or vacuum to the second chamber;an actuating member connected to the diaphragm for axial movement therewith in the first chamber, the actuating member telescopically extending into a cam assembly which translates the axial movement into a rotational movement, the cam assembly having a motion transfer connection accessible through an aperture in the shell adjacent the first chamber for transferring the rotational movement to an external device; anda damper vane attached to a vane mounting member for rotational movement therewith;wherein the vane mounting member is coupled to the motion transfer connection of the cam assembly;wherein the cam assembly includes a tubular cam follower which is supported adjacent an interior wall surface of the shell adjacent the aperture inside the first chamber for rotation about an axis thereof by an interior surface of a tubular bushing which is fixedly attached to the interior wall surface of the shell adjacent the aperture inside the first chamber, and wherein axial movement of the actuating member causes rotational movement of the cam follower within the bushing inside the first chamber for transferring the rotational movement to the external device.